/**
 * Copyright (c) 2012-2016, www.tinygroup.org (luo_guo@icloud.com).
 *
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.gnu.org/licenses/gpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.tinygroup.springmvc.util;

public final class WebUtil {

    public static String getExtension(String urlPath) {
        int end = urlPath.indexOf(';');
        if (end == -1) {
            end = urlPath.indexOf('?');
            if (end == -1) {
                end = urlPath.length();
            }
        }
        int dotIndex = urlPath.lastIndexOf('.');
        if (dotIndex != -1 && dotIndex < end) {
            return urlPath.substring(dotIndex + 1, end);
        }
        return null;
    }

    public static String getUriWithoutExtension(String urlPath) {
        int end = urlPath.indexOf(';');
        if (end == -1) {
            end = urlPath.indexOf('?');
            if (end == -1) {
                end = urlPath.length();
            }
        }
        int dotIndex = urlPath.lastIndexOf('.');
        if (dotIndex != -1 && dotIndex < end) {
            return urlPath.substring(0, dotIndex);
        }
        return urlPath;
    }

}
